Earthquake with magnitude of Md 2.2 on date 11-04-1990 and time 22:20:34 (UTC) in region 1 km NW Varano de' Melegari (PR)

A magnitude Md 2.2 earthquake occured in region: 1 km NW Varano de' Melegari (PR), on

  • 11-04-1990 22:20:34 (UTC)
  • 12-04-1990 00:20:34 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 44.6990, 10.0070 at 10 km depth.

The earthquake was located by: Bollettino Sismico Italiano INGV.

Search earthquakes: Any within 30 km radius

The values of hypocentral coordinates and magnitude may be revised at a later time as more information becomes available.

Municipalities within 20 km from the epicenter

Distances are determinated based on the geographic coordintes of the (Istat).
Municipality Region Dist Inh Cum Inh
Varano de' Melegari PR 1 2676 2676
Fornovo di Taro PR 7 6100 8776
Pellegrino Parmense PR 7 1048 9824
Solignano PR 10 1773 11597
Terenzo PR 12 1196 12793
Medesano PR 12 10828 23621
Varsi PR 13 1230 24851
Salsomaggiore Terme PR 13 19831 44682
Calestano PR 14 2100 46782
Bore PR 17 749 47531
Valmozzola PR 17 539 48070
Collecchio PR 18 14403 62473
Sala Baganza PR 18 5561 68034
Vernasca PC 18 2131 70165
Noceto PR 18 13001 83166
Felino PR 19 8790 91956
Fidenza PR 19 26770 118726
Lugagnano Val d'Arda PC 20 4116 122842

Municipalities with at least 50000 inhabitants

An earthquake occurred to
28 Km W of Parma (192836 inhabitants)
47 Km SE of Piacenza (102191 inhabitants)
48 Km S of Cremona (71901 inhabitants)
49 Km W of Reggio nell'Emilia (171345 inhabitants)
67 Km N of La Spezia (93959 inhabitants)
69 Km N of Carrara (63133 inhabitants)
70 Km W of Carpi (70699 inhabitants)
73 Km W of Modena (184973 inhabitants)
74 Km N of Massa (69479 inhabitants)
86 Km SE of Pavia (72576 inhabitants)
91 Km E of Genova (586655 inhabitants)
94 Km N of Viareggio (62467 inhabitants)
95 Km S of Brescia (196480 inhabitants)
Recent and historical seismicity
Seismic hazard
Shakemap
Felt maps
Locations history
Type Magnitude Date and Time (UTC) Latitude Longitude Depth (km) Published time (UTC) Author Location ID
Bulletin
Rev1000
Md 2.2 1990-04-11
22:20:34
44.699 10.007 10 2013-07-15
08:41:04
Bollettino Sismico Italiano INGV 113959
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 1990-04-11 22:20:34 ± 0.24
Latitude 44.6990 ± 0.0177
Longitude 10.0070 ± 0.0259
Depth (km) 10 (operator assigned)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-VAX
Event type earthquake
Origin ID 113959

Uncertainty

Field Value
Preferred uncertainty description horizontal uncertainty
Semi-major axis of confidence ellipse (meter)
Semi-minor axis of confidence ellipse (meter)
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi)
Circular confidence region, given by single value of horizontal uncertainty (meter) 2838.2
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 157
Number of associated phases, regardless of their use for origin computation 8
Number of defining phases 8
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.4
Epicentral distance of station closest to the epicenter (degree) 0.00356
Epicentral distance of station farthest from the epicenter (degree) 0.00988
Number of stations at which the event was observed 4
Number of stations from which data was used for origin computation 4
Magnitude information

Md:2.2

Field Value
Value 2.2
Uncertainty
Num. used stations 4
Type of magnitude Md
Reference to an origin 113959
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2013-01-04 18:45:59
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
--.MDI.Z. 1990-04-11T22:21:11.00 10.0 undecidable manual SN 348 1.0989 0.01 0.7
--.PII.Z. 1990-04-11T22:21:09.00 10.0 undecidable manual SN 158 1.0434 -0.75 0.3
--.BDI.Z. 1990-04-11T22:21:01.00 10.0 undecidable manual SG 145 0.7548 0.17 0.9
--.MDI.Z. 1990-04-11T22:20:55.50 10.0 undecidable manual PN 348 1.0989 -0.03 1.8
--.PII.Z. 1990-04-11T22:20:54.00 10.0 undecidable manual PN 158 1.0434 -0.81 0.8
--.BDI.Z. 1990-04-11T22:20:51.00 10.0 undecidable manual PG 145 0.7548 1.34 0.5
--.BOB.Z. 1990-04-11T22:20:49.40 10.0 undecidable manual SG 279 0.3996 0.14 0.8
--.BOB.Z. 1990-04-11T22:20:43.00 10.0 undecidable manual PG 279 0.3996 0.02 2.2
TDMT - Time Domain Moment Tensor
Fault Plane solutions in the area
Download
Type Description Link
QuakeML - small Event, Origin, FocalMechanism Download
QuakeML - full Event, Origin, FocalMechanism, Amplitude, Arrival, Pick, Station Magnitude Download